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(parent: 0ed548b) | patch
can: vxcan: vxcan_xmit: fix use after free bug
authorVincent Mailhol <mailhol.vincent@wanadoo.fr>
Wed, 20 Jan 2021 11:41:36 +0000 (20:41 +0900)
committerMarc Kleine-Budde <mkl@pengutronix.de>
Wed, 20 Jan 2021 12:33:12 +0000 (13:33 +0100)
commit5719fdb018f5f0d4676b7c23db371845b7ade0f3
tree04e4b19da43954395aca5a3ae98db7bf8fee86c3tree | snapshot
parent0ed548bde437ccb11a969a38d3da6dd20106e8bacommit | diff
can: vxcan: vxcan_xmit: fix use after free bug

After calling netif_rx_ni(skb), dereferencing skb is unsafe.
Especially, the canfd_frame cfd which aliases skb memory is accessed
after the netif_rx_ni().

Fixes: cf97ce556401 ("can: add Virtual CAN Tunnel driver (vxcan)")
Link: https://lore.kernel.org/r/20210120114137.200019-3-mailhol.vincent@wanadoo.fr
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
drivers/net/can/vxcan.c diff | blob | history
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